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PowerPoint Slideshow about 'Abyssal zone' - deborah-wilder

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Because the abyssal zone is so deep, and has so much pressure neither tidal changes or human activities really affect this zone. One human vehicle does some damage and it is the submarine. When it dives it sucks in oxygen and releases the salt and other chemicals causing damage to the fish.

This animal has two different shapes. When it is closed up it looks like a mushroom but when it is open it looks like a flower. It has tentacles up to six inches long. It uses poison in its tentacles to kill and eat small fish.

PCBs stop’s fish eggs from hatching. PCBs also poison animals, and when they get eaten the poison passes through the food chain. PCB is a organic compound with 1 to 10 chlorine atoms attached to biphenyl.

Hula Skirt time, but only 2 live to be adults. A giant squid can move anywhere its beak can fitSiphonophore

This siphonophore has a float and swimming bells. It's able to regulate its density by changing the amount of gas in its float. The float has a pore at the bottom that emits gas and can be refilled with secretions produced by a special gland.

Why doesn’t light reach the abyssal zone?Is the abyssal the most highly populated and why?How many animals are in the abyssal zone, and how many are found?How do the creatures adjust to the darkness?How do the creatures get there food?What was invented that led to further study of the abyssal zone?

Name one fish that was recently discovered? time, but only 2 live to be adults. A giant squid can move anywhere its beak can fitWhat is the temperature of the abyssal zone?What is bioluminescence?What is salinity?The abyssal have high salinity or low salinity?What creatures are being hurt in the abyssal zone?What is salinity?What would happen if the food chain was disturbed?If you affect one zone of the ocean what will happen to the other zones?